Window sash



J. DE BOBROWSKI.

WINDOW SASH.

APPLICATION FILED JAN.21,1922.

ILASGJQSG Patented Nov. 211, 1922.

JOSEPH DE 50 0W$Kl 11v JNTOR;

BY \lu kri- ATTORNEY Patented Nov 2i,

unirsn stares JOSEPH DE BOBROWSKI, 0E LOS ANGELES, CALIFORNIA.

WINDOW SASH.

Application filed January 21, 1922. Serial No. 530,987.

T 0 aZZ whom it may concern Be it known that I, Josnrrr DE Bonnow- SKI,a citizen of Poland, residing at Los Angeles, county of Los Angeles,State of California, have invented a new and useful Improvement inWindow Sashes, of which the following is aspecification.

it is the object of this invention to provide a window sashconstruction, whereby the sash is slidable in the window frame, and atthe same time may be readily rotated relative to the frame, in order topresent the outside of the window glass for cleaning.

More specifically, the invention comprises a simplified pivotal mountingfor the window sash, together with conveniently removable locking meansfor the sash.

In the embodiment of the invention as illustrated, the sash is mountedupon horizontal pivots, between runners slidable in the sides of thewindow frame. The means for locking the sash relative to the runners,consists of flexible friction strips adapted to b received incooperating grooves formed in the adjacent edges of the sash andrunners, and running the length of the same. By this arrangement, thesash may be firmly locked with relation to the runners, in order toraise and lower the sash in usual manner; and by simply withdrawing thelocking strips, the sash is adapted for rotation in the window frame.

T he construction contemplated, may be used as an attachment forstandard sashes already in use, or may be embodied in a new sashstructure.

The invention will be readily understood from the following descriptionof the accompanying drawings, in which:

l is a fragmentary perspective view of a window sash and frame,constructed in accordance with the invention.

Fig. 2 is a horizontal section through the side of the sash and frame.

The window frame 1 is provided with usual side channels 2 adapted toreceive upper and lower sashes and i respectively.

Each sash is pivotally mounted between runners 5, which extend thelength of the sash and are received in the channels 2. These runnersproject beyond the surface of the window frame, so as to permit theunobstructed rotation of the sashes with relation to the frame.

The pivotal mountings for the sashes consist of pivot pins 6 receivedthrough the runners, midway of their length, and having pro ecting endsjournaled' in the sides of the sashes, so that when the sashes areunlocked, they may be rotated to present the outside of the windowpanes.

The means for locking the sashes with relation to their runners,comprise cooperatlng grooves 7 and 8 formed in the adjacent surfaces ofthe sashes and runners, at one side of the pivot pins, and extending thelength of the runners and sashes. Flexible friction strips are receivedin these cooperating grooves, so as to positively lock the sashes, andmay be readily removed Or inserted from the end of the sash.

. The locking strips are adapted to form frictional engagement in thegrooves, in order to retain the strips in position, and are ofsufficient rigidity to be readily inserted in the grooves. For thispurpose, each strip may comprise a strip 10, of steel or the like,having a covering 11 of yieldable friction forming material, such asrubber.

By this arrangement it will be seen that I have provided a convenientlocking means for the sashes, upon the removal of which, the sashes maybe readily rotated. It will also be noted. that the construction isadaptable to either standard sashes, already in use, or to newlymanufactured sashes, embodying the improvement.

While I have illustrated and described the preferred embodiment of thedevice, it will be apparent that various changes may be made in theconstruction, combination and arrangement of parts, without departingfrom the spirit of the invention.

"What is claimed is:

A window construction comprising side runners, a sash pivoted betweensaid runners, the meeting edges of said sash and runners havingcooperating grooves extending the length thereof, and locking stripsreceived in saidcooperating grooves and slidably removable therefrom,said locking strips each comprising a strip of relatively hard materialproviding desired rigidity for the locking strip and a covering ofyieldable relatively soft material forming a friction surface for thelocking strip.

In testimony whereof I have signed inv name to this specification.

JOSEPH DE BOBROXVSKI.

